I recently purchased a 5speed ECU after doing a 5speed swap and the ECU is throwing the following codes:

1203 - Overrun clutch solenoid valve (Automatic Transmission)
1204 - Torque Converter clutch solenoid valve (Automatic Transmission)
1205 - Line Pressure Solenoid Valve (Automatic Transmission)

Are these codes stored in the TCM or did I actually recieve an automatic ECU?

 

bump......

 

it appears to me you are still using an automatic transmission ecu. is this the case ? to get rid of these codes you will need to swap in a 95,96, or 97 5 speed manual ecu. I would probably go with a 97 while any of these would work.

I have a manual as well, and back when I was going to get the upgraded ecu, i got my first ecu online from a junkyard. to check it , i checked the codes and it pulled open a bunch of automatic tranny codes. had to get them to swap it for a manual like I had asked for. Tested the next one out, and was good as gold.

If you know for a fact you have a manual transmission ecu, then im not sure what to tell ya on that.

 

try unplugging the tcu thats behind the dash, reset the ECU and check again.

 

Hey ceasar,

so you didnt do a 5 speed swap right? meaning you have no TCM? Do you remember what codes the automatic ECU you had was throwing? I am not sure if this is an auto or 5 speed ecu, this is what im trying to find out. The only thing I can think of is that my TCM is still storing the codes and the ECU is picking them up. I dont think this is the case and am pretty sure if the ECU is throwing these codes than it must be an auto ECU but I want to make sure before I return it.

 

is there anyone around you with a manual ecu you can plug in and check the codes ?

 

did you take out the TCM?